IEO — iShares U.S. Oil & Gas Exploration & Production ETF
Data updated: 2026-08-24
IEO — iShares U.S. Oil & Gas Exploration & Production ETF. United States Mid Cap Blend / Core Energy Equity. Holdings, fees, performance and SEC filings.
IEO Fund Overview
IEO — iShares U.S. Oil & Gas Exploration & Production ETF is a US ETF managed by iSHARES TRUST, categorised as United States Mid Cap Blend / Core Energy Equity. ABC INVEST provides holdings, performance, costs, cashflows, risk data, prospectus documents and SEC filings, sourced from SEC filings.
- Type: US ETF
- Manager: iSHARES TRUST
- Category: United States Mid Cap Blend / Core Energy Equity
- Assets under management: $516.13M
- 1-year return: 26.8%
- Ticker: IEO
- SEC CIK: 0001100663
- SEC series ID: S000009414
- Share class ID: C000025768
IEO Holdings
Top 10 holdings of iShares U.S. Oil & Gas Exploration & Production ETF by percentage of net assets, from the fund's latest SEC N-PORT filing.
| Holding | % of net assets |
|---|---|
| Conocophillips | 17.26% |
| Valero Energy Corporation | 10.54% |
| Marathon Petroleum Corporation | 10.17% |
| Eog Resources, Inc. | 6.56% |
| Eqt Corporation | 4.84% |
| Texas Pacific Land Corporation | 4.77% |
| Phillips 66 | 4.46% |
| Diamondback Energy, Inc. | 4.29% |
| Devon Energy Corporation | 4.25% |
| Expand Energy Corporation | 4.10% |
IEO Portfolio Allocation
Asset-class allocation of iShares U.S. Oil & Gas Exploration & Production ETF by percentage of net assets, from the latest SEC N-PORT filing.
| Asset class | Allocation |
|---|---|
| Equity | 99.9% |
| Cash & Equivalents | 3.5% |
IEO Performance
Total returns for IEO (as of 2026-09-01), from SEC filings.
| Period | Total return |
|---|---|
| YTD | 24.1% |
| 1 year | 26.8% |
| 3 years (annualised) | 11.7% |
| 5 years (annualised) | 17.4% |
IEO Risk Information
Risk metrics for IEO, derived from monthly returns in SEC filings.
- 1-year volatility (annualised): 24.1%
IEO Costs and Fees
IEO costs about $38 per $10,000 invested per year in fund expenses.
- Net expense ratio: 0.38%
- Gross expense ratio: 0.38%
- Portfolio turnover: 19%
- Brokerage commissions: 0.40 bps of average net assets (SEC N-CEN)
IEO Cashflows
Over the 12 months to 2026-06, iShares U.S. Oil & Gas Exploration & Production ETF had net outflows of $75.09M, from monthly SEC N-PORT filings.
| Month | Net flow |
|---|---|
| 2026-06 | $0 |
| 2026-05 | −$29.70M |
| 2026-04 | −$35.70M |
| 2026-03 | $54.78M |
| 2026-02 | $10.09M |
| 2026-01 | $10.19M |
IEO Debt Constituents
No individual debt constituents are reported in iShares U.S. Oil & Gas Exploration & Production ETF's latest SEC N-PORT filing.
IEO Prospectus and SEC Filings
Official iShares U.S. Oil & Gas Exploration & Production ETF filings on SEC EDGAR — prospectus, portfolio holdings and annual reports.
- Prospectus (485BPOS) — filed 2025-07-22
- Prospectus (485BPOS) — filed 2024-07-19
- Prospectus (485BPOS) — filed 2023-07-20
- Portfolio holdings (N-PORT) — filed 2026-08-24
- Portfolio holdings (N-PORT) — filed 2026-05-22
- Portfolio holdings (N-PORT) — filed 2026-02-23
- Annual census (N-CEN) — filed 2026-06-15
- Annual census (N-CEN) — filed 2025-06-13
Related Funds
Other United States Mid Cap Blend / Core Energy Equity funds tracked on ABC INVEST:
Data Sources
ABC INVEST compiles this page from public filings made to the U.S. Securities and Exchange Commission (SEC) through EDGAR: portfolio holdings and monthly cashflows from Form N-PORT, expenses and returns from fund prospectuses (Form 485BPOS) and the SEC DERA Risk/Return Summary data sets, annual data from Form N-CEN, and shareholder reports from Form N-CSR.